Question

calcule a soma dos infinitos termos da pg (1/1 ; 1/3 ;1/9 ; 1/27;...)

Answer 1

achando a razão.

q = a2/a1
q = 1/9 . 3/1
q = 1/3

Sn = a1 / ( 1 - q)

Sn= 1/3 / ( 1 - 1/3)

Sn = (1/3) / ( 2/3)

Sn = 1/3 . 3/2

Sn = 1/2 ← Resposta.


att: JHONNY